stats.put("fs", getFsObj());
        return asJson(new ApiStatsResponse().stats(stats).status(ApiResult.Status.OK).result());
    }

    private FsObj[] getFsObj() {
        return Arrays.stream(File.listRoots()).map(f -> {
            final FsObj fsObj = new FsObj();
            fsObj.path = f.getAbsolutePath();
            fsObj.free = f.getFreeSpace();
            fsObj.total = f.getTotalSpace();

    assertFalse(Files.isDirectory().apply(asciiFile));
    assertTrue(Files.isFile().apply(asciiFile));
  }

  /** Returns a root path for the file system. */
  private static File root() {
    return File.listRoots()[0];
  }

  /** Returns a {@code File} object for the given path parts. */
  private static File file(String first, String... more) {
    return file(new File(first), more);
  }

    assertFalse(Files.isDirectory().apply(asciiFile));
    assertTrue(Files.isFile().apply(asciiFile));
  }

  /** Returns a root path for the file system. */
  private static File root() {
    return File.listRoots()[0];
  }

  /** Returns a {@code File} object for the given path parts. */
  private static File file(String first, String... more) {
    return file(new File(first), more);
  }